package com.better.common.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

/**
 * Created by wfm on 2018/1/6.
 */
@Configuration
public class CorsConfig {
    /**
     * 跨域配置
     * @author:
     * @date :2018/1/6
     */
    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*"); // 1 设置访问源地址
        corsConfiguration.addAllowedHeader("*"); // 2 设置访问源请求头
        corsConfiguration.addAllowedMethod("*"); // 3 设置访问源请求方法
        corsConfiguration.setMaxAge(3600L);//预检请求的缓存时间（秒），即在这个时间段里，对于相同的跨域请求不会再预检了
        return corsConfiguration;
    }

    /**
     * 跨域过滤器
     *
     * @author:
     * @date :2018/1/6
     */
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig()); // 4 对接口配置跨域设置
        return new CorsFilter(source);
    }
}
